What do you mean by mid century? My house is 1953, is that mid century enough? (it is also a soulless and not as solid as my previous victorian property and I hate it character-less-ness with a passion) Are you sure you want a mid century house?
There's a web-based agency called Modern House - have you looked on there? Agree that mcm can be great if designed well - grew up in one, and have looked at a few while thinking about a move. Good luck.